/** @file
  Provides most USB APIs to support the Hid requests defined in USB Hid 1.1 spec
  and the standard requests defined in USB 1.1 spec.

Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2024, American Megatrends Intenational LLC. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __USB_DXE_LIB_H__
#define __USB_DXE_LIB_H__

#include <Protocol/UsbIo.h>

/**
  Get the descriptor of the specified USB HID interface.

  Submit a UsbGetHidDescriptor() request for the USB device specified by UsbIo
  and Interface, and return the HID descriptor in HidDescriptor.
  If UsbIo is NULL, then ASSERT().
  If HidDescriptor is NULL, then ASSERT().

  @param  UsbIo          A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface      The index of the HID interface on the USB target.
  @param  HidDescriptor  Pointer to the USB HID descriptor that was retrieved from
                         the specified USB target and interface. Type EFI_USB_HID_DESCRIPTOR
                         is defined in the MDE Package Industry Standard include file Usb.h.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbGetHidDescriptor (
  IN  EFI_USB_IO_PROTOCOL     *UsbIo,
  IN  UINT8                   Interface,
  OUT EFI_USB_HID_DESCRIPTOR  *HidDescriptor
  );

/**
  Get the report descriptor of the specified USB HID interface.

  Submit a USB get HID report descriptor request for the USB device specified by
  UsbIo and Interface, and return the report descriptor in DescriptorBuffer.
  If UsbIo is NULL, then ASSERT().
  If DescriptorBuffer is NULL, then ASSERT().

  @param  UsbIo             A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface         The index of the report interface on the USB target.
  @param  DescriptorLength  The size, in bytes, of DescriptorBuffer.
  @param  DescriptorBuffer  A pointer to the buffer to store the report class descriptor.

  @retval  EFI_SUCCESS           The request executed successfully.
  @retval  EFI_OUT_OF_RESOURCES  The request could not be completed because the
                                 buffer specified by DescriptorLength and DescriptorBuffer
                                 is not large enough to hold the result of the request.
  @retval  EFI_TIMEOUT           A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR      The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbGetReportDescriptor (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT8                Interface,
  IN  UINT16               DescriptorLength,
  OUT UINT8                *DescriptorBuffer
  );

/**
  Get the HID protocol of the specified USB HID interface.

  Submit a USB get HID protocol request for the USB device specified by UsbIo
  and Interface, and return the protocol retrieved in Protocol.
  If UsbIo is NULL, then ASSERT().
  If Protocol is NULL, then ASSERT().

  @param  UsbIo      A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface  The index of the report interface on the USB target.
  @param  Protocol   A pointer to the protocol for the specified USB target.

  @retval  EFI_SUCCESS       The request executed successfully.
  @retval  EFI_TIMEOUT       A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR  The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbGetProtocolRequest (
  IN EFI_USB_IO_PROTOCOL  *UsbIo,
  IN UINT8                Interface,
  OUT UINT8               *Protocol
  );

/**
  Set the HID protocol of the specified USB HID interface.

  Submit a USB set HID protocol request for the USB device specified by UsbIo
  and Interface, and set the protocol to the value specified by Protocol.
  If UsbIo is NULL, then ASSERT().

  @param  UsbIo      A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface  The index of the report interface on the USB target.
  @param  Protocol   The protocol value to set for the specified USB target.

  @retval  EFI_SUCCESS       The request executed successfully.
  @retval  EFI_TIMEOUT       A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR  The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbSetProtocolRequest (
  IN EFI_USB_IO_PROTOCOL  *UsbIo,
  IN UINT8                Interface,
  IN UINT8                Protocol
  );

/**
  Set the idle rate of the specified USB HID report.

  Submit a USB set HID report idle request for the USB device specified by UsbIo,
  Interface, and ReportId, and set the idle rate to the value specified by Duration.
  If UsbIo is NULL, then ASSERT().

  @param  UsbIo      A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface  The index of the report interface on the USB target.
  @param  ReportId   The identifier of the report to retrieve.
  @param  Duration   The idle rate to set for the specified USB target.

  @retval  EFI_SUCCESS       The request executed successfully.
  @retval  EFI_TIMEOUT       A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR  The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbSetIdleRequest (
  IN EFI_USB_IO_PROTOCOL  *UsbIo,
  IN UINT8                Interface,
  IN UINT8                ReportId,
  IN UINT8                Duration
  );

/**
  Get the idle rate of the specified USB HID report.

  Submit a USB get HID report idle request for the USB device specified by UsbIo,
  Interface, and ReportId, and return the ide rate in Duration.
  If UsbIo is NULL, then ASSERT().
  If Duration is NULL, then ASSERT().

  @param  UsbIo      A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface  The index of the report interface on the USB target.
  @param  ReportId   The identifier of the report to retrieve.
  @param  Duration   A pointer to the idle rate retrieved from the specified USB target.

  @retval  EFI_SUCCESS       The request executed successfully.
  @retval  EFI_TIMEOUT       A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR  The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbGetIdleRequest (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT8                Interface,
  IN  UINT8                ReportId,
  OUT UINT8                *Duration
  );

/**
  Set the report descriptor of the specified USB HID interface.

  Submit a USB set HID report request for the USB device specified by UsbIo,
  Interface, ReportId, and ReportType, and set the report descriptor using the
  buffer specified by ReportLength and Report.
  If UsbIo is NULL, then ASSERT().
  If Report is NULL, then ASSERT().

  @param  UsbIo         A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface     The index of the report interface on the USB target.
  @param  ReportId      The identifier of the report to retrieve.
  @param  ReportType    The type of report to retrieve.
  @param  ReportLength  The size, in bytes, of Report.
  @param  Report        A pointer to the report descriptor buffer to set.

  @retval  EFI_SUCCESS       The request executed successfully.
  @retval  EFI_TIMEOUT       A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR  The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbSetReportRequest (
  IN EFI_USB_IO_PROTOCOL  *UsbIo,
  IN UINT8                Interface,
  IN UINT8                ReportId,
  IN UINT8                ReportType,
  IN UINT16               ReportLen,
  IN UINT8                *Report
  );

/**
  Get the report descriptor of the specified USB HID interface.

  Submit a USB get HID report request for the USB device specified by UsbIo,
  Interface, ReportId, and ReportType, and return the report in the buffer
  specified by Report.
  If UsbIo is NULL, then ASSERT().
  If Report is NULL, then ASSERT().

  @param  UsbIo         A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface     The index of the report interface on the USB target.
  @param  ReportId      The identifier of the report to retrieve.
  @param  ReportType    The type of report to retrieve.
  @param  ReportLength  The size, in bytes, of Report.
  @param  Report        A pointer to the buffer to store the report descriptor.

  @retval  EFI_SUCCESS           The request executed successfully.
  @retval  EFI_OUT_OF_RESOURCES  The request could not be completed because the
                                 buffer specified by ReportLength and Report is not
                                 large enough to hold the result of the request.
  @retval  EFI_TIMEOUT           A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR      The request failed due to a device error.

**/
EFI_STATUS
EFIAPI
UsbGetReportRequest (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT8                Interface,
  IN  UINT8                ReportId,
  IN  UINT8                ReportType,
  IN  UINT16               ReportLen,
  OUT UINT8                *Report
  );

/**
  Get the descriptor of the specified USB device.

  Submit a USB get descriptor request for the USB device specified by UsbIo, Value,
  and Index, and return the descriptor in the buffer specified by Descriptor.
  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Descriptor is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo             A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Value             The device request value.
  @param  Index             The device request index.
  @param  DescriptorLength  The size, in bytes, of Descriptor.
  @param  Descriptor        A pointer to the descriptor buffer to get.
  @param  Status            A pointer to the status of the transfer.

  @retval EFI_SUCCESS           The request executed successfully.
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed because the
                                buffer specified by DescriptorLength and Descriptor
                                is not large enough to hold the result of the request.
  @retval EFI_TIMEOUT           A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR      The request failed due to a device error. The transfer
                                status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbGetDescriptor (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT16               Value,
  IN  UINT16               Index,
  IN  UINT16               DescriptorLength,
  OUT VOID                 *Descriptor,
  OUT UINT32               *Status
  );

/**
  Set the descriptor of the specified USB device.

  Submit a USB set descriptor request for the USB device specified by UsbIo,
  Value, and Index, and set the descriptor using the buffer specified by DesriptorLength
  and Descriptor.  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Descriptor is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo             A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Value             The device request value.
  @param  Index             The device request index.
  @param  DescriptorLength  The size, in bytes, of Descriptor.
  @param  Descriptor        A pointer to the descriptor buffer to set.
  @param  Status            A pointer to the status of the transfer.

  @retval  EFI_SUCCESS       The request executed successfully.
  @retval  EFI_TIMEOUT       A timeout occurred executing the request.
  @retval  EFI_DEVICE_ERROR  The request failed due to a device error.
                             The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbSetDescriptor (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT16               Value,
  IN  UINT16               Index,
  IN  UINT16               DescriptorLength,
  IN  VOID                 *Descriptor,
  OUT UINT32               *Status
  );

/**
  Get the interface setting of the specified USB device.

  Submit a USB get interface request for the USB device specified by UsbIo,
  and Interface, and place the result in the buffer specified by AlternateSetting.
  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If AlternateSetting is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo             A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface         The interface index value.
  @param  AlternateSetting  A pointer to the alternate setting to be retrieved.
  @param  Status            A pointer to the status of the transfer.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.
                            The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbGetInterface (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT16               Interface,
  OUT UINT16               *AlternateSetting,
  OUT UINT32               *Status
  );

/**
  Set the interface setting of the specified USB device.

  Submit a USB set interface request for the USB device specified by UsbIo, and
  Interface, and set the alternate setting to the value specified by AlternateSetting.
  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo             A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Interface         The interface index value.
  @param  AlternateSetting  The alternate setting to be set.
  @param  Status            A pointer to the status of the transfer.

  @retval EFI_SUCCESS  The request executed successfully.
  @retval EFI_TIMEOUT  A timeout occurred executing the request.
  @retval EFI_SUCCESS  The request failed due to a device error.
                       The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbSetInterface (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT16               Interface,
  IN  UINT16               AlternateSetting,
  OUT UINT32               *Status
  );

/**
  Get the device configuration.

  Submit a USB get configuration request for the USB device specified by UsbIo
  and place the result in the buffer specified by ConfigurationValue. The status
  of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If ConfigurationValue is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo               A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  ConfigurationValue  A pointer to the device configuration to be retrieved.
  @param  Status              A pointer to the status of the transfer.

  @retval EFI_SUCCESS        The request executed successfully.
  @retval EFI_TIMEOUT        A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR   The request failed due to a device error.
                             The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbGetConfiguration (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  OUT UINT16               *ConfigurationValue,
  OUT UINT32               *Status
  );

/**
  Set the device configuration.

  Submit a USB set configuration request for the USB device specified by UsbIo
  and set the device configuration to the value specified by ConfigurationValue.
  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo               A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  ConfigurationValue  The device configuration value to be set.
  @param  Status              A pointer to the status of the transfer.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.
                            The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbSetConfiguration (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT16               ConfigurationValue,
  OUT UINT32               *Status
  );

/**
  Set the specified feature of the specified device.

  Submit a USB set device feature request for the USB device specified by UsbIo,
  Recipient, and Target to the value specified by Value.  The status of the
  transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo      A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Recipient  The USB data recipient type (i.e. Device, Interface, Endpoint).
                     Type USB_TYPES_DEFINITION is defined in the MDE Package Industry
                     Standard include file Usb.h.
  @param  Value      The value of the feature to be set.
  @param  Target     The index of the device to be set.
  @param  Status     A pointer to the status of the transfer.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.
                            The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbSetFeature (
  IN  EFI_USB_IO_PROTOCOL   *UsbIo,
  IN  USB_TYPES_DEFINITION  Recipient,
  IN  UINT16                Value,
  IN  UINT16                Target,
  OUT UINT32                *Status
  );

/**
  Clear the specified feature of the specified device.

  Submit a USB clear device feature request for the USB device specified by UsbIo,
  Recipient, and Target to the value specified by Value.  The status of the transfer
  is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo      A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Recipient  The USB data recipient type (i.e. Device, Interface, Endpoint).
                     Type USB_TYPES_DEFINITION is defined in the MDE Package Industry Standard
                     include file Usb.h.
  @param  Value      The value of the feature to be cleared.
  @param  Target     The index of the device to be cleared.
  @param  Status     A pointer to the status of the transfer.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.
                            The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbClearFeature (
  IN  EFI_USB_IO_PROTOCOL   *UsbIo,
  IN  USB_TYPES_DEFINITION  Recipient,
  IN  UINT16                Value,
  IN  UINT16                Target,
  OUT UINT32                *Status
  );

/**
  Get the status of the specified device.

  Submit a USB device get status request for the USB device specified by UsbIo,
  Recipient, and Target, and place the result in the buffer specified by DeviceStatus.
  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If DeviceStatus is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo         A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Recipient     The USB data recipient type (i.e. Device, Interface, Endpoint).
                        Type USB_TYPES_DEFINITION is defined in the MDE Package Industry Standard
                        include file Usb.h.
  @param  Target        The index of the device to be get the status of.
  @param  DeviceStatus  A pointer to the device status to be retrieved.
  @param  Status        A pointer to the status of the transfer.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.
                            The transfer status is returned in Status.

**/
EFI_STATUS
EFIAPI
UsbGetStatus (
  IN  EFI_USB_IO_PROTOCOL   *UsbIo,
  IN  USB_TYPES_DEFINITION  Recipient,
  IN  UINT16                Target,
  OUT UINT16                *DeviceStatus,
  OUT UINT32                *Status
  );

/**
  Clear halt feature of the specified usb endpoint.

  Retrieve the USB endpoint descriptor specified by UsbIo and EndPoint.
  If the USB endpoint descriptor can not be retrieved, then return EFI_NOT_FOUND.
  If the endpoint descriptor is found, then clear the halt feature of this USB endpoint.
  The status of the transfer is returned in Status.
  If UsbIo is NULL, then ASSERT().
  If Status is NULL, then ASSERT().

  @param  UsbIo     A pointer to the USB I/O Protocol instance for the specific USB target.
  @param  Endpoint  The endpoint address.
  @param  Status    A pointer to the status of the transfer.

  @retval EFI_SUCCESS       The request executed successfully.
  @retval EFI_TIMEOUT       A timeout occurred executing the request.
  @retval EFI_DEVICE_ERROR  The request failed due to a device error.
                            The transfer status is returned in Status.
  @retval EFI_NOT_FOUND     The specified USB endpoint descriptor can not be found

**/
EFI_STATUS
EFIAPI
UsbClearEndpointHalt (
  IN  EFI_USB_IO_PROTOCOL  *UsbIo,
  IN  UINT8                Endpoint,
  OUT UINT32               *Status
  );

/**
  Retrieve the interface descriptor details from the interface setting.

  This is an extended version of UsbIo->GetInterfaceDescriptor. It returns the interface
  descriptor for an alternate setting of the interface without executing SET_INTERFACE
  transfer. It also returns the number of class specific interfaces.
  AlternateSetting parameter is the zero-based interface descriptor index that is used in USB
  interface descriptor as USB_INTERFACE_DESCRIPTOR.AlternateSetting.

  @param[in]  This              A pointer to the EFI_USB_IO_PROTOCOL instance.
  @param[in]  AlternateSetting  Interface alternate setting.
  @param[out]  Descriptor       The caller allocated buffer to return the contents of the Interface descriptor.
  @param[out]  CsInterfaceNumber  Number of class specific interfaces for this interface setting.

  @retval EFI_SUCCESS           Output parameters were updated successfully.
  @retval EFI_INVALID_PARAMETER Descriptor or CsInterfaceNumber is NULL.
  @retval EFI_UNSUPPORTED       Setting is greater than the number of alternate settings in this interface.
  @retval EFI_DEVICE_ERROR      Error reading device data.

**/
EFI_STATUS
EFIAPI
UsbGetInterfaceDescriptorSetting (
  IN  EFI_USB_IO_PROTOCOL           *This,
  IN  UINT16                        AlternateSetting,
  OUT EFI_USB_INTERFACE_DESCRIPTOR  *Descriptor,
  OUT UINTN                         *CsInterfacesNumber
  );

/**
  Retrieve the endpoint descriptor from the interface setting.

  This is an extended version of UsbIo->GetEndpointDescriptor. It returns the endpoint
  descriptor for an alternate setting of a given interface.
  AlternateSetting parameter is the zero-based interface descriptor index that is used in USB
  interface descriptor as USB_INTERFACE_DESCRIPTOR.AlternateSetting.

  Note: The total number of endpoints can be retrieved from the interface descriptor
  returned by EDKII_USBIO_EXT_GET_INTERFACE_DESCRIPTOR function.

  @param[in]  This              A pointer to the EFI_USB_IO_PROTOCOL instance.
  @param[in]  AlternateSetting  Interface alternate setting.
  @param[in]  Index             Index of the endpoint to retrieve. The valid range is 0..15.
  @param[out]  Descriptor       A pointer to the caller allocated USB Interface Descriptor.

  @retval EFI_SUCCESS           Output parameters were updated successfully.
  @retval EFI_INVALID_PARAMETER Descriptor is NULL.
  @retval EFI_UNSUPPORTED       Setting is greater than the number of alternate settings in this interface.
  @retval EFI_NOT_FOUND         Index is greater than the number of endpoints in this interface.
  @retval EFI_DEVICE_ERROR      Error reading device data.

**/
EFI_STATUS
EFIAPI
UsbGetEndpointDescriptorSetting (
  IN  EFI_USB_IO_PROTOCOL          *This,
  IN  UINT16                       AlternateSetting,
  IN  UINTN                        Index,
  OUT EFI_USB_ENDPOINT_DESCRIPTOR  *Descriptor
  );

/**
  Retrieve class specific interface descriptor.

  AlternateSetting parameter is the zero-based interface descriptor index that is used in USB
  interface descriptor as USB_INTERFACE_DESCRIPTOR.AlternateSetting.

  @param[in]  This              A pointer to the EFI_USB_IO_PROTOCOL instance.
  @param[in]  AlternateSetting  Interface alternate setting.
  @param[in]  Index             Zero-based index of the class specific interface.
  @param[in][out]  BufferSize   On input, the size in bytes of the return Descriptor buffer.
                                On output the size of data returned in Descriptor.
  @param[out]  Descriptor       The buffer to return the contents of the class specific interface descriptor. May
                                be NULL with a zero BufferSize in order to determine the size buffer needed.

  @retval EFI_SUCCESS           Output parameters were updated successfully.
  @retval EFI_INVALID_PARAMETER BufferSize is NULL.
                                Buffer is NULL and *BufferSize is not zero.
  @retval EFI_UNSUPPORTED       Setting is greater than the number of alternate settings in this interface.
  @retval EFI_NOT_FOUND         Index is greater than the number of class specific interfaces.
  @retval EFI_BUFFER_TOO_SMALL  The BufferSize is too small for the result. BufferSize has been updated with the size
                                needed to complete the request.
  @retval EFI_DEVICE_ERROR      Error reading device data.

**/
EFI_STATUS
EFIAPI
UsbGetCsInterfaceDescriptor (
  IN  EFI_USB_IO_PROTOCOL  *This,
  IN  UINT16               AlternateSetting,
  IN  UINTN                Index,
  IN OUT UINTN             *BufferSize,
  OUT VOID                 *Buffer
  );

/**
  Retrieve class specific endpoint descriptor.

  AlternateSetting parameter is the zero-based interface descriptor index that is used in USB
  interface descriptor as USB_INTERFACE_DESCRIPTOR.AlternateSetting.

  @param[in]  This              A pointer to the EFI_USB_IO_PROTOCOL instance.
  @param[in]  AlternateSetting  Interface alternate setting.
  @param[in]  Index             Zero-based index of the non-zero endpoint.
  @param[in][out]  BufferSize   On input, the size in bytes of the return Descriptor buffer.
                                On output the size of data returned in Descriptor.
  @param[out]  Descriptor       The buffer to return the contents of the class specific endpoint descriptor. May
                                be NULL with a zero BufferSize in order to determine the size buffer needed.

  @retval EFI_SUCCESS           Output parameters were updated successfully.
  @retval EFI_INVALID_PARAMETER BufferSize is NULL.
                                Buffer is NULL and *BufferSize is not zero.
  @retval EFI_UNSUPPORTED       Setting is greater than the number of alternate settings in this interface.
  @retval EFI_NOT_FOUND         Index is greater than the number of endpoints in this interface.
                                Endpoint does not have class specific endpoint descriptor.
  @retval EFI_BUFFER_TOO_SMALL  The BufferSize is too small for the result. BufferSize has been updated with the size
                                needed to complete the request.
  @retval EFI_DEVICE_ERROR      Error reading device data.

**/
EFI_STATUS
EFIAPI
UsbGetCsEndpointDescriptor (
  IN  EFI_USB_IO_PROTOCOL  *This,
  IN  UINT16               AlternateSetting,
  IN  UINTN                Index,
  IN OUT UINTN             *BufferSize,
  OUT VOID                 *Buffer
  );

#endif
